Error in Backend Polls, statistics.

I installed version 1.5.13 of Comunity Polls and I find the following Error, when entry into the backend of the options polls and statistics.


Catchable fatal error: Object of class stdClass could not be converted to string in /home/rapipagi/public_html/premium/administrator/modules/mod_addtomenu/mod_addtomenu.php on line 23


someone has passed this


Thanks for your help